【正文】 ive, let go of obsession, revel is 20, if the fate of the broken Hopes of sailing, please don39。 you learn knowledge, is you have weapons, you can start from scratch, but not unarmed。t lose your life and the life, respectively is: the former is a we experienced cannot escape in a day finally will last minute, while the latter is our persistent, we want to cherish the memory of those people and things. 14, learn to smile, learn to strong, the world you know so many people, so many people and you are, you cannot change also can39。 and an exception is better to give than to what 13, don39。 no matter how many grievances, how unfortable, and ultimately to heal themselves or their own, others may got you to fort, but never know your heart is how wanjianchuanxin. 12, ma39。 to let strangers people care about your life in the good things, the original is not easy 10, do not blame, do not laugh at who, also don39。 now want anything, for fear that others know, or like to lose the same. 9, the heart move, everything in the world is followed by birth, Rangrang, important thing is often the most difficult to open one39。 heart tired, calm. Grow up, mature, this society read. Tired and sad, squat down, to their a hug. Because the world no one can sympathize with you, have mercy on you. You cry, tears is your own。 life happy and worry, all is you of life attitude, optimistic, good luck。t 6, when we are in a positive frame of mind, you will find many good things。 I am not afraid of the truth to tell the best friend, I39。t want to face, don39。t always take everything back to things, and don39。 not disillusioned after the heart, such as ashes, but experience the storm after the enlightenment。 to discipline a ruler, often the control inspection, and consciously in the ideological red line to draw the row Ming Good accumulation is indeed the bottom line, so that the heart has fear, said to have quit, the line has ended. Attached: indifferent to heart, calmly to the table in our life, there are many unpredictable things will happen, some good, some bad things, we cannot control is powerless to stop, but with time, you will find in life sometimes turns out to be not good, some bad things finally turned out to be a good thing, but then we muddy however did not know, this is the life teach us things. 1, life can be plex, can also be simple. Want simple life of precipitation, to have enough time to reflect, to make Bee more perfect. Life is the most important thing is not to win, but the struggle。求每種情況下容器內(nèi)空氣的最終溫度？解:（1）同上題662K=389℃（2）h=cpT0L=kpT=552K=279℃同（2）只是W不同T=473K＝200℃3－13 解：對理想氣體3－14 解：（1）理想氣體狀態(tài)方程＝586K（2）吸熱：＝2500kJ315 解：煙氣放熱等于空氣吸熱 m3的煙氣的熱＝267kJ＝205℃t2=10+205=215℃316 解： 代入得：＝582K＝309℃3－17 解：等容過程＝318 解：定壓過程 T1== T2=內(nèi)能變化：＝焓變化： kJ功量交換： ＝熱量交換： = kJ（英文版 ） easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the code and rule , lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the laws and regulations for implementation in place. Throughout the discipline in the daily supervision and management, strengthen supervision and inspection, from the thorough investigation of violations of discipline behavior. Strengthen to key areas, key departments and key projects as well as the masses reflect the concentration of the units and departments for supervision. strengthening supervision, discipline inspection and supervision of cadres to set an example for pliance with the code and rule is a man must be hexyl, blacksmith needs its own hardware. Discipline inspection organs as the executor of the party discipline, and supervisor of the defenders, for its supervision must be more strictly, discipline inspection and supervision of cadres to firmly establish the awareness of Party Constitution, sense of discipline and rules consciousness, politics loyalty, sense obey. Action speak Ji Ordinance to set an example of the regulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do ply with and . To firmly establish the discipline must first be disciplined, the supervisor will be subject to the supervision of concept, and consciously safeguard and implement party passes party, take the lead in practicing three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the code as morality, politics and brought to fruition。現(xiàn)以一絕熱容器用帶閥門的管道與它相連，慢慢開啟閥門使空氣從主管道流入容器。儲罐的閥門關(guān)閉后放置較長時間，最后罐內(nèi)溫度回復(fù)到室溫。3－11 ，與溫度為27℃、壓力為7MPa的壓縮空氣干管相連接，當(dāng)閥門打開，空氣流進(jìn)罐內(nèi)，壓力達(dá)到5MPa時，把閥門關(guān)閉。試計算：（1）風(fēng)機(jī)出口處空氣溫度；（2）空氣在加熱器中的吸熱量；（3）若加熱器中有阻力，空氣通過它時產(chǎn)生不可逆的摩擦擾動并帶來壓力降，以上計算結(jié)果是否正確？解：開口穩(wěn)態(tài)穩(wěn)流系統(tǒng)（1）風(fēng)機(jī)入口為0℃℃℃空氣在加熱器中的吸熱量＝(3)若加熱有阻力，結(jié)果1仍正確；但在加熱器中的吸熱量減少。解：開口系統(tǒng)特征：絕熱充氣過程工質(zhì)：空氣（理想氣體）根據(jù)開口系統(tǒng)能量方程，忽略動能和未能，同時沒有軸功，沒有熱量傳遞。求充氣終了時罐內(nèi)空氣的溫度。解：熱力系：左邊的空氣系統(tǒng)：整個容器為閉口系統(tǒng)過程特征：絕熱，自由膨脹根據(jù)閉口系統(tǒng)能量方程絕熱自由膨脹W＝0因此ΔU=0對空氣可以看作理想氣體，其內(nèi)能是溫度的單值函數(shù)，得根據(jù)理想氣體狀態(tài)方程＝100kPa39 一個儲氣罐從壓縮空氣總管充氣，總管內(nèi)壓縮空氣參數(shù)恒定，為500 kPa，25℃。試求容器內(nèi)最終壓力和溫度。過程Q（kJ）W（kJ）ΔE（kJ）1～21100011002～301001003～495009504～505050解：同上題37 解：熱力系：閉口系統(tǒng)，狀態(tài)方程：＝90kJ由狀態(tài)方程得1000＝a*+b200=a*+b解上兩式得：a=800b=1160則功量為＝900kJ過程中傳熱量＝990 kJ3－8 容積由隔板分成兩部分，左邊盛有壓力為600kPa，溫度為27℃的空氣，右邊為真空，容積為左邊5倍。過程熱量Q（kJ）膨脹功W（kJ）1a210x12b1741c2x22解：閉口系統(tǒng)。3－5，有一閉口系統(tǒng)，從狀態(tài)1經(jīng)a變化到狀態(tài)2，如圖，又從狀態(tài)2經(jīng)b回到狀態(tài)1；再從狀態(tài)1經(jīng)過c變化到狀態(tài)2。閉口系統(tǒng)根據(jù)閉口系統(tǒng)能量方程因為沒有作功故W=0；對整個禮堂的空氣和人來說沒有外來熱量，所以內(nèi)能的增加為0。閉口系統(tǒng)根據(jù)閉口系統(tǒng)能量方程因為沒有作功故W=0；熱量來源于人體散熱；內(nèi)能的增加等于人體散熱。3－1 安靜狀態(tài)下的人對環(huán)境的散熱量大約為400KJ/h，假設(shè)能容納2000人的大禮堂的通風(fēng)系統(tǒng)壞了：（1）在通風(fēng)系統(tǒng)出現(xiàn)故障后的最初20min內(nèi)禮堂中的空氣內(nèi)能增加多少？（2）把禮堂空氣和所有的人考慮為一個系統(tǒng)，假設(shè)對外界沒有傳熱，系統(tǒng)內(nèi)能變化多少？如何解釋空氣溫度的升高。解：（1）熱力系：禮堂中的空氣。＝105kJ（1）熱力系：禮堂中的空氣和人?？諝鉁囟鹊纳呤侨梭w的散熱量由空氣吸收，導(dǎo)致的空氣內(nèi)能增加。在這個過程中，熱量和功的某些值已知，如表，試確定未知量。使用閉口系統(tǒng)能量方程(1)對1a2和2b1組成一